// preload ButtonOn Images to improve initial swap response
		var aMainMenuImages = new Array();
		aMainMenuImages[0] = new Image();
		aMainMenuImages[0].src = "/images/buttons/how_on.gif";
		aMainMenuImages[1] = new Image();
		aMainMenuImages[1].src = "/images/buttons/product_on.gif";
		aMainMenuImages[2] = new Image();
		aMainMenuImages[2].src = "/images/buttons/testimonial_on.gif";				
		aMainMenuImages[3] = new Image();
		aMainMenuImages[3].src = "/images/buttons/order_on.gif";				

		// SwapButton is called from the WebMenu OnShow and OnHide events
		// state is true for selected or false unselected and id is the WM.Group ID property
		function SwapButton(id, state)
		{
			if(state)
				eval("document." + id + "button.src='/images/buttons/" + id + "_on.gif'");
			else
				eval("document." + id + "button.src='/images/buttons/" + id + ".gif'");
		}